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Medical devices with proximity detection

  • US 9,402,545 B2
  • Filed: 11/03/2014
  • Issued: 08/02/2016
  • Est. Priority Date: 06/30/2010
  • Status: Active Grant
First Claim
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1. A wireless medical device, the wireless medical device comprising:

  • a processor;

    a memory;

    a sensor for detecting a physiological signal;

    a radio; and

    a proximity detector to measure a distance of the wireless medical device relative to a second wireless medical device, the proximity detector including a ranging functionality,wherein a wireless communication channel is created when the distance measured by the proximity detector between the wireless medical device and the second wireless medical device is within a first predetermined threshold, the distance being greater than zero,wherein, upon establishing the wireless communication channel, the wireless medical device receives a patient context from the second wireless medical device, the patient context providing an identifier for a patient;

    wherein the patient context is transmitted from the second wireless medical device to the wireless medical device over a channel that is different from the wireless communication channel, with the channel using a different communication method from a primary communication method used for the wireless communication channel; and

    wherein the patient context is removed from the wireless medical device when;

    the distance between the wireless medical device and the second wireless medical device is greater than a second predetermined threshold for at least a predetermined time interval;

    ora time since a physiological measurement has been made at the wireless medical device is greater than a predetermined time interval.

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